Strainer.



H. B. HOLT.

STRAINER.

APPLICATION FILED MAR. 2, 1915.

1,140,459. Patented May 25, 1915.

2 SHEETS-SHEET I.

FIBJ.

WITNESSES INVENTOR THE NORRIS PETERS 60.. PHOTG-LITHty. WASHINGTON. D C.

of Allegheny flamers B. 1 101111, or noarxon'r rescues, rniv vsvnveum.

STBAINEB.

T all whom it may concern:

Be it known that I, HARRIs B. HOLT, residing at Dormont Borough, in the county and State of Pennsylvania, a citizen of the United States, have invented or discovered certain new and useful Improvements in Strainers, of which improvements the following is a specification.

My invention relates to strainers, such for example as are used on the inlet side of pumps, and the object thereof is to provide a strainer which is simple in construction, efiective in operation, and which may be easily cleaned. i

In the accompanying sheets of drawings, which form part of my specification, I have illustrated one embodiment of my invention.

Figure 1 is a combined elevation and central sectional view of the inlet side of the strainer, and Fig. 2 a sectional view taken on the line II II, Fig. 1.

The casing or shell may be of any suitable form or construction, and may be adapted to contain as many straining elements as desired. In the form shown herein the casing is arranged for three straining elements, and is preferably made of a body portion 1 and a cover 1*, and is, by means of a suitable partition 2, divided into an inlet chamber 3 and an outlet chamber 4:, having respectively, inlet and outlet openings 5 and 6. The partition is provided with three ports or orifices 7 for placing these chambers in communication. Each orifice is provided with a straining element, preferably in the form of a perforate basket 8, which, through a suitable flanged collar 9, is attached to a sleeve 10 loosely mounted on a rotatable shaft 11 and supported thereon by alco llar 12. Since, except for a detail presently to be explained, each of the three strainer constructions are the same, the further description will refer to but one of them. The open side of the basket is preferably substantially flush with the plane of the orifice 7 through which it extends, and a ring-like space intervenes between the outer rim 13 of the basket and the edge of the orifice. To close such space when water or other fluid is passing through the basket, a flexible gasket 14 of rubber or other suitable material may be attached either to the rim 13, as shown in the central and left hand baskets of Fig. 1, or to the casing 1, 1*, as shown in the right hand basket.

As already stated, the basket is held in Specification of Letters Patent.

such movement the gasket 14-,

Patented May 25, 1915.

Application filed March 2, 1 915. serial 110. 11,551.

fixed position within the orifices. In order to clean the basket, I preferably provide a basket-containing casing or bucket 15 movable through the orifice, and, when in its uppermost position as indicated in Fig. 2, performing the double function of setting apart a cleaning chamber within the inlet and outlet chambers, and of closing the orifice between such chambers. When in its lowermost position, as indicated in the left of Fig. 1, such basket serves as a receptacle for catching sand or other small particles that may pass through, and fall downwardly from the basket. For moving the casing 15, it be provided with an interiorly threaded boss 16, adapted .to engage ,the hreads of the lower end of the shaft 11, which is rotatably mounted in the bottom of the casing 1. A cleanout opening 17 is formed opposite to the orifice 7, and for such opening there is a hinged door 18 provided with a rotatable shaft 19, adapted, when the door is closed, to engage the end of the shaft 11. Any suitable means may be employed to prevent the bucket 15 from rotating when the shaft 11 is turned. As shown herein, each bucket is provided with a lug 2O longitudinally slidable in a groove 21 formed in the casing.

' In normal operation, that is when fluid is passing through a basket 8, the bucket or casing 15 will be in the position indicated at the left of Fig. 1, and will receive small particles passing through and falling from the basket. When it is desired to clean the basket the shaft 19 is rotated to cause the casing to move through the orifice 7 until its upper edge is seated against the seating ring2 2 adjacent to the opening 17. During whether it be attached to the basket rim 13 or to the casing 1, 1*, will be pressed upwardly, as indicated in the drawings; and it will be ob served that, as the casing is moved upwardly, the frictional contact of the gasket 11 with the upper edge of the casing will remove from such edge any particles that may have lodged thereon and which would otherwise prevent a water tight closure between the edge of the casing and the ring 22. The door 18 may then be opened and the basket, together with the collar 10, may be slid longitudinally of the shaft 10; and, while the basket is thus removed, the sand may be taken from the casing 15.

I claim as my invention:

1. In a strainer, the combination of a casing having a partition dividing it into inlet and outlet chambers, anorifice through such partition, a straining basket in fixed position within said orifice, a cleanout open mg in the casing Wall, and a basket-containing casing movable through said orifice and when in one position forming a cleanout chamber surrounding said basket and separating it from the inlet and outlet chambers.

2. In a strainer, the combination of a casing having a partition dividing it into inlet and outlet chambers, an orifice through such partition, a strainer basket in fixed position within such orifice and extending into the outlet chamber, a cleanout opening, a basketcontaining receptacle normally disposed within the outlet chamber and below said basket, and means for moving said receptacle through said orifice and to a position adjacent to the cleanout orifice.

3. In a strainer, the combination of a casing having a partition dividing it into inlet and outlet chambers, an orifice through such partition, a straining element in fixed position within such orifice, a cleanout opening in the casing, and a movable chambered member affording when in one position a receptacle for particles passing through and falling downwardly from the straining elements and in the other position a cleanout chamber surrounding said element.

4. In a strainer, the combination of a casing having a partition dividing it into inlet and outlet chambers, an orifice through said partition, a straining element in fixed position within the casing and through which fluid passes from the inlet to the outlet chamber, a cleanout opening in the casing, and a single movable element for. closing said orifice and inclosing the basket in a cleanout chamber adjacent to said opening.

5. In a strainer, the combination of a casing having a partition dividing it into inlet and outlet chambers, an orifice through said partition, a cleanout opening in the casing disposed oppositely to the partition orifice, a rotatable shaft projecting throughsaid orifice, a straining bucket supported by said shaft but longitudinally immovable by the rotation thereof, and means for forming a cleanout chamber surrounding said bucket and partly Within each of said chambers.

In a strainer, the combination of acasing having a partition dividing it into inlet and outlet chambers, an orifice through said partition, a cleanout opening disposed 0ppositely to such orifice, a rotatably mounted shaft projecting through the orifice, a straining basket supported in fixed position upon said shaft, and a bucket movable through said orifice by the rotation of said shaft,

said bucket when moved to the cleanout opening forming a cleanout chamber adjacent thereto.

7. In a strainer, the combination of a casing having a partition dividing it lnto inlet and outlet chambers, an orifice through said partition, a cleanout opening disposed oppositely to said orifice, a rotatable shaft projecting centrally through said orifice, a

sleeve loosely mounted on the upper portion of said shaft and supported thereby, a strainer basket secured to said sleeve and having its open end substantially in a plane with said orifice, a basket-containing bucket having screw threaded engagement with said shaft and movable through said orifice, and a flexible gasket adapted to extend from the rim of said basket to the edge of said orifice but upwardly bendable by the movement of said bucket.

In testimony whereof I have hereunto set my hand.

HARRIS B. HOLT.

WVitnesses:

PAUL M. CRn'oHLoW, FRANCIS J. TOMASSON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

